Abstract: On October 13, 2005, Employee #1 was installing replacement windows and doors for One Stop Windows & Doors, Inc. He allegedly received abrasions on both knees while doing this work. Employee #1 claimed that the abrasion on the right knee led to an infection. Employee #1 had not told his employer about his injury. The employer became aware of the incident, when contacted by his worker's compensation carrier that a claim had been filed. Employee #1 was hospitalized at Kaiser Hospital from October 25 through 28, 2005, for treatment of the infection. The doctor's notes and discharge summary concluded the probable cause of the cellulitis as a pimple on the knee that the employee had burst, causing the infection to spread. The portion of the doctor's notes for a worker's compensation claim was not completed. Written statements by three other employees indicated that they did not see Employee #1 do any long kneeling and did not hear him complain of any acute injury or pain. The investigation concluded that the injury is not work related.